Red Screen
Open a pure red screen in your browser for display testing, pixel checks, solid backgrounds, low-light viewing, and more.
Screen color controls
SCREEN COLOR
Press Esc to exit fullscreen.
Red Screen Online
The Red Screen tool displays a pure #FF0000 red screen directly in the browser and can be opened fullscreen for quick, distraction-free viewing.
What can you use a red screen for?
- checking how a display renders pure red
- identifying pixel/display irregularities
- helping reveal pixels that do not reproduce the red channel correctly
- providing a solid red background
- using a red display in situations where a red-colored light or background is useful
- switching among White, Black, Red, Green and Blue for basic visual display checking
Red is useful for quick display checks, but it is not a professional calibration tool. Switching between White, Black, Red, Green and Blue can help reveal different display defects.
How to use the Red Screen
- Choose Red or another screen color.
- Click OPEN FULLSCREEN.
- Exit fullscreen normally when finished.
Frequently asked questions
Red is selected by default, and OPEN FULLSCREEN opens the pure #FF0000 screen.
Yes. Pure red makes it easy to check how a display renders the red channel and whether any pixels or regions look uneven or incorrect.
A solid red display makes channel-specific issues easier to notice, especially when comparing it with White, Black, Green and Blue screens.
Yes. A solid red fullscreen surface can be useful for a simple red background or test area.
This tool uses #FF0000, RGB 255, 0, 0.
Yes. The page is responsive and the active color is shown in the browser. Fullscreen support depends on the device and browser.